Bosch Compress 3000 DW FO, Compress 3000 DW FO HP 270-1E 0 FOV/S Installation Instructions Manual
Installation instructions
Electric Heat Pump Water Heater
Compress 3000 DW FO
6720801244-00.1V
HP 270-1E 0 FOV/S...
6 720 801 244 (2013/08) AU
6 720 801 244 (2013/08) Compress 3000 DW FO
2 | Index
Index
1 Key to symbols and safety instructions . . . . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety information . . . . . . . . . . . . . . . . . . . . . . . 3
2 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Features and safety devices . . . . . . . . . . . . . . . 7
3.3 Specification tables . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Storing and transportation . . . . . . . . . . . . . . 10
3.4.1 Transport using a forklift . . . . . . . . . . . . . . . . 10
3.4.2 Manual transport . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Operational principle (brief overview
of modes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Tools required . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Location requirements . . . . . . . . . . . . . . . . . 15
4.3 Secure the appliance . . . . . . . . . . . . . . . . . . . 16
4.4 Water piping . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.1 Inlet - Outlet connections . . . . . . . . . . . . . . . 16
4.4.2 Dielectric joint (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4.3 Condensate Drain Tubes (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4.4 TPR Valve (supplied with the appliance) . . . 17
4.4.5 Thermal expansion tank (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.6 Temperature mixing device (not supplied
with the appliance) . . . . . . . . . . . . . . . . . . . . . 18
4.4.7 Pressure limiting valve (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.8 Expansion control valve (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Electric requirements . . . . . . . . . . . . . . . . . . 18
4.6 Installation configurations . . . . . . . . . . . . . . . 19
4.6.1 Ecological ambient heat recovery . . . . . . . . . 19
4.7 Insulation blanket . . . . . . . . . . . . . . . . . . . . . 20
4.8 Fill the water storage tank . . . . . . . . . . . . . . . 20
4.8.1 Water characteristics . . . . . . . . . . . . . . . . . . 21
4.9 Installation checklist . . . . . . . . . . . . . . . . . . . 21
4.10 What to expect for “normal startup” . . . . . . . 23
4.11 Off-peak compatibility . . . . . . . . . . . . . . . . . . 23
5 Operation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1 Safety warnings . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Working display . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Working modes . . . . . . . . . . . . . . . . . . . . . . . 25
5.4 „Operating“ menu . . . . . . . . . . . . . . . . . . . . . . 25
5.4.1 „manual“ mode . . . . . . . . . . . . . . . . . . . . . . . . 25
5.4.2 „P1“, „P2“ and „P3“ modes . . . . . . . . . . . . . . 25
5.4.3 „Off“ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.5 Temperature set point . . . . . . . . . . . . . . . . . . 26
5.6 „Main“ menu . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.6.1 „Mode“ function - heating modes . . . . . . . . . . 26
5.6.2 „Prog“ function - Timetable operation
programming . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.6.3 Silent Mode programming - „Sil“ function . . . 29
5.6.4 „Leg“ function - automatic thermal
disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.6.5 „Set“ function - adjustments . . . . . . . . . . . . . 31
5.6.6 „Purg“ function - purge . . . . . . . . . . . . . . . . . . 31
5.6.7 „Info“ function - information . . . . . . . . . . . . . . 31
5.7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 32
5.8 Factory configurations . . . . . . . . . . . . . . . . . . 32
5.9 Selecting the temperature units - „°C“ or „ °F“ 32
5.10 Setting the time and day of the week . . . . . . . 33
5.11 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6 Maintenance and repair . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1 Periodic Inspection . . . . . . . . . . . . . . . . . . . . . 35
6.2 Temperature and pressure relief valve
(PTR Valve) . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.3 Flushing tank . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Draining the Water Heater . . . . . . . . . . . . . . . 35
6.5 Vacation and Extended Shutdown . . . . . . . . . 36
6.6 Clearing the Condensation Drain Tubes . . . . 36
6.7 Refrigerant circuit . . . . . . . . . . . . . . . . . . . . . . 36
6.8 Anode Rod servicing . . . . . . . . . . . . . . . . . . . . 36
6.9 Checking/replacing the magnesium anode . . 36
6.10 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.1 Fault display . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.2 Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Environmental protection . . . . . . . . . . . . . . . . . . . . . . . 43
10 Warranty details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6 720 801 244 (2013/08)Compress 3000 DW FO
Key to symbols and safety instructions | 3
1 Key to symbols and safety
instructions
1.1 Key to symbols
Warnings
The following keywords are defined and can be used in this
document:
• NOTICE indicates a situation that could result in damage to
property or equipment.
• CAUTION indicates a situation that could result in minor to
medium injury.
• WARNING indicates a situation that could result in severe
injury or death.
• DANGER indicates a situation that will result in severe
injury or death.
Important information
Additional symbols
1.2 Safety information
„Water“ safety warnings
Warnings in this document are identified by a
warning triangle printed against a grey
background.
Keywords at the start of a warning indicate
the type and seriousness of the ensuing risk
if measures to prevent the risk are not taken.
This symbol indicates important information
where there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
•List entry
– List entry (second level)
Table 1
WARNING:
This water heater is not suitable for pool
heating.
WARNING:
The appliance should be located in an area
where leakage of the heater or connections
will not result in damage to the area adjacent
to the appliance or to lower floors of the
structure. When such locations cannot be
avoided, it is recommended that a suitable
drain pan, adequately drained, be installed
under the appliance.
WARNING:
If a water heater is installed in a closed water
supply system, such as one having a
backflow preventer in the cold water supply
line, means shall be provided to control
thermal expansion. Contact the water
supplier or local plumber on how to control
this situation.
WARNING:
Precautions must be taken prior to manually
operating the relief valve to avoid contact
with hot water coming out of the relief valve
and to prevent water damage.
WARNING:
If a relief valve discharges periodically, this
may be due to thermal expansion in a closed
water supply system. Contact the water
supplier or local plumber on how to correct
this situation. Do not plug the relief valve.
WARNING:
The temperature pressure relief valve
should be checked for performance every
six months or replaced at intervals not
exceeding 3 years, or more frequently in
areas where there is a high incidence of
water deposits.
6 720 801 244 (2013/08) Compress 3000 DW FO
4 | Key to symbols and safety instructions
Refrigerant
▶ Please observe the relevant environmental regulations
when using and reusing refrigerant. Do not allow
refrigerant to be discharged into the environment. Use the
refrigerant R134a. It is non-flammable and does not have a
destructive impact on the ozone layer.
▶ Before working on parts of the refrigerant circuit, remove
the refrigerant to ensure work safety.
Use HFC-134a and PAG-OIL for maintenance purposes. It
contains fluorinated greenhouse gas and is rated with a
greenhouse potential of 1300 in the Kyoto Protocol.
„Electric“ safety warnings
„General“ safety warnings
Do not store or use gasoline or other flammable, combustible
or corrosive vapors and liquids in the vicinity of this or any
other appliance.
For your safety
WARNING:
This water heater contains electronic
equipment and 500V insulation tests must
only be conducted between active and earth
and between neutral and earth. An active to
neutral test WILL damage the electronics.
WARNING:
All electrical work and fixed wiring must be
carried out by a qualified person and in
accordance with the Wiring Rules AS/NZS
3000 and local authority requirements.
DANGER:
Shock hazard: line voltage is present. Before
servicing the water heater, please cut the
power supply. Failure to do so could result in
severe personal injury or death.
CAUTION:
Label all wires prior to disconnection when
servicing controls. Wiring errors can result in
improper and dangerous operation.
Verify proper operation after servicing.
WARNING:
Do not turn power off to the appliance if cold
weather is expected as components may be
damaged by freezing. If power needs to be
turned off or power failure occurs and
freezing conditions are expected, water
should be drained from the appliance.
WARNING:
Do not operate this system before reading
the manual.
WARNING:
This appliance must be installed,
commissioned and serviced by an
authorised person in accordance with all
applicable local rules and regulations.
WARNING:
Keep appliance area clear and free from
combustible materials, gasoline and other
flammable vapors and liquids.
WARNING:
The power supply to the appliance must not
be activated until the system is filled with
water.
WARNING:
To meet the requirements of the National
Plumbing Standard, the temperature of the
stored water must not be below 60 °C.
6 720 801 244 (2013/08)Compress 3000 DW FO
Key to symbols and safety instructions | 5
Fig. 1
To prevent serious injury, unit damage or damage to other
property, please use the unit properly. Read this manual
carefully and understand the following information correctly.
High temperature water increases the risk of scald injury
This water heater can heat up water to temperatures which can
cause scalding. Always feel the water temperature before use,
either before having a shower or when filling a bath tub to
ensure it will not cause scald injuries.
We rec om men d, a nd i t m ay a lso be r eq uir ed b y re gu lat ion s th at
an approved temperature limiting device is fitted into the hot
water pipe connected to sanitary outlets (i.e. bathroom and
ensuite). This will keep the water temperature below 50 °C at
these outlets. The risk of scald injury will be reduced and still
allow hotter water to the kitchen and laundry.
Notice to Victorian Customers from the Victorian Plumbing
Industry Commission.
This water heater must be installed by a licensed person as
required by the Victorian Building Act 1993. Only a licensed
professional will give you a Compliance Certificate, showing
that the work complies with all the relevant standards. Only a
licensed person will have insurance protecting their
workmanship.
Make sure you use a licensed person to install this water heater
and ask for your Compliance Certificate.
Every care has been taken to ensure accuracy in preparing this
document.
No liability can be accepted for any consequences, which may
arise as a result of its application.
WARNING:
This appliance is not intended for use by
persons, including children, with reduced
physical, sensory or mental capabilities, or
lack of experience and knowledge, unless
they have been given supervision or
instruction concerning use of the appliance
by a person responsible for their safety.
WARNING:
Water temperatures over 50 °C can cause
severe scalds. Local regulations and/or the
requirements of AS/NZS 3500.4 must be
considered regarding the temperature
limitations of hot water used primarily for
personal hygiene.
HOT
BURN
DANGER
Water temperature over 50°C can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
Feel water before bathing or
showering.
6720801244-15.1V
WARNING:
Installation requirements are described in
section 4. The water heat er must be installed
by an authorised person and the installation
must comply with Standards AS/NZS
3500.4, AS/NZS 3000 and all local codes
and regulatory authority requirements. In
New Zealand, the installation must conform
with Clause G12 of the New Zealand Building
Code.
WARNING:
A wrong operation may lead to death or
serious injury to people.
6 720 801 244 (2013/08) Compress 3000 DW FO
6 | Standard delivery
2 Standard delivery
Fig. 2
[1] Heat pump
[2] Set of printed documents for the appliance
[3] PTR valve
1
2
6720801244-02.1V
3
6 720 801 244 (2013/08)Compress 3000 DW FO
Appliance details | 7
3 Appliance details
3.1 Overview
Fig. 3 Appliance overview
3.2 Features and safety devices
Easy to operate and environmentally friendly
The heat pump has user interface with easy use menu keys for
ease of programming. The heat pump is also environmental
friendly as it transfers heat from the surrounding area into the
water.
Heating capacity
The unit absorbs ambient energy and releases the heat into the
water stored in the tank. If the ambient temperature is low, the
heating capacity of the heat pump will be reduced, but you can
still rely on the electric element for backup.
Thermal Cut Out (TCOs)
The water heater is equipped with one thermal cut out (TCO)
located above the heating element, in contact with the tank
surface. If for any reason the water temperature becomes
excessively high, the thermal cut-out (TCO) cuts the power
circuit to the heatin g element. Once activated, the TCO must be
reset manually. Resetting of the temperature limiting control
should be done by a qualified service technician.
Air inletAir outlet
User
interface
User
interface
cap
Tank
6720801244-03.1V
CAUTION:
The cause of the high temperature condition
must be investigated by a qualified service
technician and corrective action must be
taken before placing the water heater in
service again.
6 720 801 244 (2013/08) Compress 3000 DW FO
8 | Appliance details
Defrosting
During heating, when the air temperature is between 3 °C and
10 °C, the unit will defrost automatically to make sure the
heating efficiency is retained (it will last 15 minutes).
The fan motor will continue running when the unit is being
defrosted.
Working condition
The appliance is designed to operate with best efficiency when
the air temperature is between +3 °C and +40 °C. For the best
results please install the unit in an area with an environment
temperature of +3 °C to +40 °C.
Care should be taken to feed the unit only with potable water
( section 4.8.1). Do not use untreated water from lakes,
rivers or groundwater!
Overheating protection
When the water temperature reaches 84 °C ± 4 °C the power to
the heating element will be cut off and will require a manual
reset.
Water temperature or pressure protection
The unit is supplied with a PTR valve for your safety (supplied
accessory). If the tank pressure reaches 1000kPa or the
temperature reaches 99 °C, the PTR valve will open
automatically to allow the pressure or temperature to decrease
to safe values.
The warranty can become void if relief valves or other safety
devices are tampered with or if the installation is not in
accordance with the instructions in this manual.
Mains Pressure
This water heater is designed for direct connection to mains
water supply. In case the mains supply pressure exceeds
800kPa, a pressure limiting valve must be installed
(section 4.4.6). A minimum water supply pressure of
200kPa is required to assure the effective operation of this
water heater.
6 720 801 244 (2013/08)Compress 3000 DW FO
Appliance details | 9
3.3 Specification tables
Model HP 270-1E 0 FOV/S...
Running modes Heat Pump Only Mode
Running ambient air temp. °C +3 °C/+40 °C
Outlet Water Temp. °C 60 °C - 65 °C
Minimum Inlet Water Temp. °C 3 °C
Maximum Inlet Water Temp. °C 70 °C
Power supply Ph-V-Hz 1ph / 230V-240V / 50 Hz
IP rating IP X4
Storage size ltr 270
Water heating Heating capacity
1)
kW 1.5
Max. input
1)
kW 0.6
COP
1)
-3.3
Max. current
1)
A2.5
Unit Dimension (D×H) mm 670 x 1840
Packing (W×H×D)
mm 770 x 770 x 2050
Net/gross weight
kg 130
Sound pressure level at 2 m dB (A) 43
Refrigerant type/Mass kg R134a / 0.375
Max. refrigerant circuit pressure kPa 2700
PTR valve setting
2)
kPa 1000
Throttling type Thermal expansion valves
System protection High pressure switch, Temperature limiter
Air flow m3/h 350
Compressor Model WHP01900
Type
Rotary
Brand
Highly
Input
W700
Fan motor Model W1G230EB
Brand
EBM Papst
Input
W28
Speed
r/min 1500
Water connections Water inlet ¾ BSP inch
Water outlet
¾ BSP inch
Max. water working
kPa 1000
PTR valve joint
½ BSP inch
Max inlet pressure
kPa 800
Heat exchanger
Double wall plate heat exchanger
E-heater Rated power input at 240 V kW 1.8
Rated current at 240 V
A7.8
Table 2
1) EN255-3, water inlet 15 °C, air at 15 °C
2) PTR valve power capacity: 10 kW
6 720 801 244 (2013/08) Compress 3000 DW FO
10 | Appliance details
Operating ambient air temperature range:
Operating ambient temperature range (Heat pump only): 3 40 °C
Range of warehouse storage temperature: -20~60 °C
Set point for the hot water temperature: fixed at 60 °C
3.4 Storing and transportation
As a rule, the unit is to be stored and/or transported in its
shipping package in upright position and with an empty tank.
For transport over short distances, and provided due care is
taken, an inclination angle of up to 20° is permitted. Both
during transport and storage, ambient temperatures of - 20 to
+60 °C are permissible.
3.4.1 Transport using a forklift
When transported by a forklift, the unit must remain mounted
on the pallet. The lifting rate should be kept to a minimum. Due
to its top-heaviness, the unit must be secured against tipping
over. To prevent any damage, the unit must be placed on a level
surface!
3.4.2 Manual transport
For the manual transport, the wooden pallet can be used for
bottom part as long as the carrying straps are secure. Care
must be taken that the maximum permissible inclination angle
of 20° from vertical is not exceeded. If transport in an inclined
position cannot be avoided, the unit should only be taken into
operation one hour after it has been moved into it's final vertical
position.
Fig. 4
In Combi Mode the appliance can operate
beyond the normal temperature range by the
use of the electrical heater only.
6720801244-18.1V
WARNING:
Heat pumps are heavy and bulky. Australian
States and Territories have a Principal
Occupational Health and Safety (OH&S) Act
which contains requirements relating to the
handling of large, bulky or awkward items.
Persons installing this heat pump system
must be aware of their responsibilities and
be adequately trained and qualified in
accordance with local OH&S requirements.
WARNING: Transport damage!
▶ Avoid tilting the appliance at an angle of
more than 20°.
▶ Take care when handling the appliance.
▶ To avoid dropping the appliance and
damaging internal components, do not
pivot the appliance.
WARNING: Transport damage!
▶ To avoid transport damage, wait until the
appliance is at the installation location to
remove the protective packaging.
▶ U se straps to prevent the appliance from
becoming scratched.
▶ Use suitable means of transport to bring
the appliance to the installation location
(special car, pallet truck, etc).
6 720 801 244 (2013/08)Compress 3000 DW FO
Appliance details | 11
3.5 Operational principle (brief overview of modes)
Fig. 5
[1] Air fan
[2] Evaporator
[3] Compressor
[4] Condenser (gas/water heat exchanger)
[5] NTC temperature sensor (air inlet)
[6] DHW connection
[7] Cold water inlet
[8] Electric heating element
[9] NTC temperature sensor (top of storage tank)
[10] DHW circulation pump
[11] NTC temperature sensor (bottom of storage tank)
[12] High-pressure pressure switch
[13] Expansion valve
[14] Dry filter
[15] Low-pressure pressure switch
[16] Magnesium anode
1
2
3
4
6
7
16
10
11
14
13
6720801244-05.1V
8
5
12
15
9
6 720 801 244 (2013/08) Compress 3000 DW FO
12 | Appliance details
System theory
The refrigerant circuit is a closed system in which the
refrigerant R134a circulates as a heat transfer medium.
The evaporator transfers the heat from the air to the refrigerant
circuit, and the refrigerant evaporates into a gas.
The compressor compresses the refrigerant R134a, thus
increasing its temperature.
Then the heat is transferred via a heat exchanger, also referred
to as a condenser, to the storage water tank. The refrigerant
R134a condenses in the process.
R134a flows through the expansion valve in a liquid state with
decreasing pressure. Then it is routed back to the evaporator.
Brief overview of modes
• Heat pump mode: only the economical heat pump cycle
is used; if the air temperature goes beyond the nominal
range (3 °C - 40 °C) the appliance automatically turns
off.
• Combi mode: the heat pump cycle is used under the
nominal range for the air temperature (3 °C - 40 °C); if
the air temperature goes out of this interval, the
appliance automatically switches to the electrical
heating element; this is the factory pre-selected mode.
6 720 801 244 (2013/08)Compress 3000 DW FO
Appliance details | 13
3.6 Dimensions
Fig. 6 Dimensions (in mm)
1840
16,5
1180
64
Ø 670
6720801244-06.1V
6 720 801 244 (2013/08) Compress 3000 DW FO
14 | Installation instructions
3.7 Clearances
Fig. 7
4 Installation instructions
The manufacturer’s warranty does not cover any damage or
defect caused by improper installation, attachment or use of
any type of accessories (other than those listed in this user
manual) with this water heater. The use of unauthorized
>1000mm
>200mm
>1000mm
>1000mm
>1000mm
>600mm
Air outlet
Display
Barrier
Air inlet
6720801244-07.1V
Condensate drain
PTR valve
DANGER:
The Temperature and Pressure relief valve
delivered with the unit must be installed and
must not be sealed or blocked. Failing to do
so will result in a dangerous situation
(section 4.4.4).
6 720 801 244 (2013/08)Compress 3000 DW FO
Installation instructions | 15
energy-saving devices may shorten the life of the water heater
and may endanger life and cause property damage.
The manufacturer disclaims any responsibility for such loss or
injury resulting from the use of such unauthorized devices.
4.1 Tools required
•Wrench ¾"
• Philips screwdriver
• Flat screwdriver
4.2 Location requirements
Locate the water heater in a clean area as near as possible to
the area of biggest hot water demand. Long uninsulated hot
water lines can waste energy and water.
Note: Because this unit draws in ambient air to heat the water,
wh en us ing the u nit indoo rs, t he roo m must be at lea st 3m x 3m
x 2,5m (22,5 m
3
) or larger, and preferably vented. If the room
is smaller, there must be a louvered door with minimum
500cm
2
venting area.
Place the water heater in such a way that clearance for proper
servicing is considered (section 3.7), namely for top cover
removal, PTR valve access and anode rod removal and
installation.
Remember you may need to remove the entire unit later for
servicing.
The water heater and water lines should be protected from
freezing temperatures and highly corrosive atmospheres.
Fig. 8 Water heater support as specified in AS3500.4
NOTE: Auxiliary catch pan MUST conform to local codes. Catch
Pan Kits are available from the store where the water heater
was purchased, a builder store or any water heater distributor.
Recommendation
Even if this unit runs at very low noise levels, it is advisable to
install it away from any living area windows.
▶ Check council laws for specific localized rules in relation to
location requirements for this appliance.
Outdoor installation
This unit was designed both for outdoor and indoor installation.
Proper clearances must be observed.
Local installation regulations
The installation must comply with the requirements of AS/NZS
3500.4 and AS/NZS 3000 standards and all additional local
codes and regulatory authority requirements.
CAUTION:
The water heater should not be located in an
area where leakage of the tank or connection
will result in damage to the area adjacent to
it or to lower floors of the structure. In places
where installation in such areas cannot be
avoided, it is recommended that a suitable
catch pan, adequately drained, be installed
under the water heater (Fig. 8).
WARNING:
This water heater SHOULD NOT be installed
in an area with a corrosive atmosphere
where chemicals or flammable liquids are
stored or where aerosol propellants are
released. When using outdoors, because of
natural air movement in a room or other
enclosed space, these corrosive/flammable
vapours can be carried from where they are
being used or stored. Any electric arc drawn
within the water heater's electronic controls
can ignite these vapours causing an
explosion or fire, which may result in severe
burns or death to those in range, as well as
property damage.
6720801244-11.1V
B
A
Route to open drain.
Line should be at least
DN50 and pitched for
proper drainage.
A= Ø of appliance
plus 50 mm min
B= Maximum 50 mm
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